The number of marble slabs of size 20 cm x 20 cm required to pave the floor of a square room of side 3 metres is :
A student multiplied a number by 3/5 instead of 5/3. What is the percentage error ?
If a/3 = b/4 = c/7, then ( a + b + c )/c = :
A vendor bought 3 chocolates for 1 rupee. For how much per chocolate should be sell, to gain a profit of 50%
A man walks 30 meters towards South. Then, turning to his right, he walks 30 meters. Then turning to his left, he walks 20 meters, again he turns to his left and walks 30 meters. How far is he from his initial position?
The speed of a car is 30km/hr. How many hours will it take to travel a distance of 135 km?